Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies - Schedule of Disaggregated Net Sales (Details)

v3.20.2
Organization and Summary of Significant Accounting Policies - Schedule of Disaggregated Net Sales (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Total net sales $ 1,126 $ 9,236 $ 3,987 $ 16,983
Telecom [Member]        
Total net sales 1,096 9,051 3,834 16,364
Government/Military [Member]        
Total net sales 4 165 8 537
Marine [Member]        
Total net sales 2 18 3 80
Other (backup DC power to various industries) [Member]        
Total net sales 24 2 142 2
DC Power Systems [Member]        
Total net sales 1,074 8,906 3,819 16,570
Accessories [Member]        
Total net sales $ 52 $ 330 $ 168 $ 413